US2020925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Card sorting machine
Assignee: Westinghouse Electric Corp
•
Filing: 1933-06-02
•
Granted: 1935-11-12
•
Expires: 1953-06-02
Abstract
No abstract record available.
Inventors
- 👤 Douglass A Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:23
CPC Classifications
B; B07; B07C; B07C3/00; B07C3/02; B07C3/08; B07C3/082; B07C3/085; Y; Y10; Y10S; Y10S209/00; Y10S209/933
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-11-11 | 1939-05-13 | 1939-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-11 | 1943-05-13 | 1943-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-11 | 1947-05-13 | 1947-11-12 | $7700.00 | Window Closed / Lapsed |